Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.13.3
Qt Version: 4.8.6
Operating System: Linux 3.13.0-36-generic x86_64
Distribution: Ubuntu 14.04.1 LTS

-- Information about the crash:
Plasma desktop did suddenly crash when I tried to add the desktop switcher applet.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f79371fe7c0 (LWP 1617))]

Thread 3 (Thread 0x7f7904bfa700 (LWP 1621)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f792fe9bffb in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f7930199f00 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f792fe9c039 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f792a747182 in start_thread (arg=0x7f7904bfa700) at pthread_create.c:312
#4  0x00007f7936ae8fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f7879760700 (LWP 1624)):
#0  0x00007f792a74a807 in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7f7874000a60) at pthread_mutex_unlock.c:63
#1  __GI___pthread_mutex_unlock (mutex=0x7f7874000a60) at pthread_mutex_unlock.c:310
#2  0x00007f792a0779c1 in g_mutex_unlock (mutex=mutex@entry=0x7f78740009a0) at /build/buildd/glib2.0-2.40.0/./glib/gthread-posix.c:228
#3  0x00007f792a035680 in g_main_context_prepare (context=context@entry=0x7f78740009a0, priority=priority@entry=0x7f787975fca8) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3350
#4  0x00007f792a035f03 in g_main_context_iterate (context=context@entry=0x7f78740009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3714
#5  0x00007f792a0360ec in g_main_context_iteration (context=0x7f78740009a0, may_block=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3795
#6  0x00007f79336b17be in QEventDispatcherGlib::processEvents (this=0x7f78740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007f79336830af in QEventLoop::processEvents (this=this@entry=0x7f787975fde0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f79336833a5 in QEventLoop::exec (this=this@entry=0x7f787975fde0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f793357fc5f in QThread::exec (this=this@entry=0x17d2450) at thread/qthread.cpp:537
#10 0x00007f7933664823 in QInotifyFileSystemWatcherEngine::run (this=0x17d2450) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007f793358232f in QThreadPrivate::start (arg=0x17d2450) at thread/qthread_unix.cpp:349
#12 0x00007f792a747182 in start_thread (arg=0x7f7879760700) at pthread_create.c:312
#13 0x00007f7936ae8fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f79371fe7c0 (LWP 1617)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f7882dba5c0 in DeclarativeMimeData::DeclarativeMimeData (this=0x7fff8d7c9390, copy=0x3ceb260) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeMimeData.cpp:50
#8  0x00007f7882db9db1 in DeclarativeDragDropEvent::DeclarativeDragDropEvent (this=0x7fff8d7c9370, e=0x7fff8d7c97a0, parent=0x1475670) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragDropEvent.cpp:33
#9  0x00007f7882db9ea4 in DeclarativeDropArea::dragLeaveEvent (this=0x1475670, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDropArea.cpp:44
#10 0x00007f7932fc7702 in QGraphicsItem::sceneEvent (this=this@entry=0x1475680, event=event@entry=0x7fff8d7c97a0) at graphicsview/qgraphicsitem.cpp:6734
#11 0x00007f793527f7c4 in QDeclarativeItem::sceneEvent (this=0x1475670, event=0x7fff8d7c97a0) at graphicsitems/qdeclarativeitem.cpp:3081
#12 0x00007f7932fee1c7 in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0xceeac0, item=0x1475680, dragDropEvent=0x7fff8d7c97a0) at graphicsview/qgraphicsscene.cpp:1250
#13 0x00007f7932fee1ff in QGraphicsScene::dragLeaveEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3738
#14 0x00007f79330031f0 in QGraphicsScene::event (this=0xcfd010, event=0x7fff8d7c97a0) at graphicsview/qgraphicsscene.cpp:3406
#15 0x00007f7932a1de2c in QApplicationPrivate::notify_helper (this=this@entry=0xac8890, receiver=receiver@entry=0xcfd010, e=e@entry=0x7fff8d7c97a0) at kernel/qapplication.cpp:4567
#16 0x00007f7932a244a0 in QApplication::notify (this=this@entry=0xabcd30, receiver=receiver@entry=0xcfd010, e=e@entry=0x7fff8d7c97a0) at kernel/qapplication.cpp:4353
#17 0x00007f7934349d1a in KApplication::notify (this=0xabcd30, receiver=0xcfd010, event=0x7fff8d7c97a0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f79336844dd in QCoreApplication::notifyInternal (this=0xabcd30, receiver=0xcfd010, event=event@entry=0x7fff8d7c97a0) at kernel/qcoreapplication.cpp:953
#19 0x00007f793301b088 in sendEvent (event=0x7fff8d7c97a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QGraphicsView::dragLeaveEvent (this=<optimized out>, event=0x7fff8d7c9bb0) at graphicsview/qgraphicsview.cpp:2990
#21 0x00007f7932a6d273 in QWidget::event (this=this@entry=0x229b380, event=event@entry=0x7fff8d7c9bb0) at kernel/qwidget.cpp:8589
#22 0x00007f7932e0efce in QFrame::event (this=0x229b380, e=0x7fff8d7c9bb0) at widgets/qframe.cpp:557
#23 0x00007f793301a7b9 in QGraphicsView::viewportEvent (this=0x229b380, event=0x7fff8d7c9bb0) at graphicsview/qgraphicsview.cpp:2866
#24 0x00007f7933684646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0xac8890, receiver=receiver@entry=0x1225330, event=event@entry=0x7fff8d7c9bb0) at kernel/qcoreapplication.cpp:1063
#25 0x00007f7932a1de0c in QApplicationPrivate::notify_helper (this=this@entry=0xac8890, receiver=receiver@entry=0x1225330, e=e@entry=0x7fff8d7c9bb0) at kernel/qapplication.cpp:4563
#26 0x00007f7932a25326 in QApplication::notify (this=this@entry=0xabcd30, receiver=receiver@entry=0x1225330, e=e@entry=0x7fff8d7c9bb0) at kernel/qapplication.cpp:4353
#27 0x00007f7934349d1a in KApplication::notify (this=0xabcd30, receiver=0x1225330, event=0x7fff8d7c9bb0) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f79336844dd in QCoreApplication::notifyInternal (this=0xabcd30, receiver=0x1225330, event=0x7fff8d7c9bb0) at kernel/qcoreapplication.cpp:953
#29 0x00007f7932aa56ee in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QX11Data::xdndHandleLeave (this=0x7fff8d7c92e0, w=0x3ceb260, xe=0x7fff8d7c9c00) at kernel/qdnd_x11.cpp:1068
#31 0x00007f7932aa5830 in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1107
#32 0x00007f7932aa5c3a in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1410
#33 QDragManager::cancel (this=0x394aff0, deleteSource=deleteSource@entry=false) at kernel/qdnd_x11.cpp:1411
#34 0x00007f7932a2ebda in QDrag::~QDrag (this=0x40ebc20, __in_chrg=<optimized out>) at kernel/qdrag.cpp:132
#35 0x00007f7932a2ebf9 in QDrag::~QDrag (this=0x40ebc20, __in_chrg=<optimized out>) at kernel/qdrag.cpp:133
#36 0x00007f793369b168 in QObjectPrivate::deleteChildren (this=this@entry=0x405d970) at kernel/qobject.cpp:1907
#37 0x00007f7932a69d37 in QWidget::~QWidget (this=0x383e9c0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#38 0x00007f7932a6a049 in QWidget::~QWidget (this=0x383e9c0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1703
#39 0x00007f793369b168 in QObjectPrivate::deleteChildren (this=this@entry=0x3b720f0) at kernel/qobject.cpp:1907
#40 0x00007f7932a69d37 in QWidget::~QWidget (this=0x3b386b0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1679
#41 0x00007f7933014935 in QGraphicsView::~QGraphicsView (this=0x3b386b0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1158
#42 0x00007f7933014969 in QGraphicsView::~QGraphicsView (this=0x3b386b0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1164
#43 0x00007f7936de1a14 in ControllerWindow::~ControllerWindow (this=0x364a950, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:107
#44 0x00007f7936de1a69 in ControllerWindow::~ControllerWindow (this=0x364a950, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:108
#45 0x00007f793369cc58 in QObject::event (this=this@entry=0x364a950, e=e@entry=0x3489620) at kernel/qobject.cpp:1175
#46 0x00007f7932a6d55b in QWidget::event (this=0x364a950, event=0x3489620) at kernel/qwidget.cpp:8846
#47 0x00007f7932a1de2c in QApplicationPrivate::notify_helper (this=this@entry=0xac8890, receiver=receiver@entry=0x364a950, e=e@entry=0x3489620) at kernel/qapplication.cpp:4567
#48 0x00007f7932a244a0 in QApplication::notify (this=this@entry=0xabcd30, receiver=receiver@entry=0x364a950, e=e@entry=0x3489620) at kernel/qapplication.cpp:4353
#49 0x00007f7934349d1a in KApplication::notify (this=0xabcd30, receiver=0x364a950, event=0x3489620) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f79336844dd in QCoreApplication::notifyInternal (this=0xabcd30, receiver=receiver@entry=0x364a950, event=event@entry=0x3489620) at kernel/qcoreapplication.cpp:953
#51 0x00007f7933687b3d in sendEvent (event=0x3489620, receiver=0x364a950) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xa371f0) at kernel/qcoreapplication.cpp:1577
#53 0x00007f7933687fe3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#54 0x00007f79336b1f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#55 postEventSourceDispatch (s=0xac5d30) at kernel/qeventdispatcher_glib.cpp:287
#56 0x00007f792a035e04 in g_main_dispatch (context=0xac8d20) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3064
#57 g_main_context_dispatch (context=context@entry=0xac8d20) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3663
#58 0x00007f792a036048 in g_main_context_iterate (context=context@entry=0xac8d20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3734
#59 0x00007f792a0360ec in g_main_context_iteration (context=0xac8d20, may_block=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3795
#60 0x00007f79336b17a1 in QEventDispatcherGlib::processEvents (this=0xa38af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#61 0x00007f7932abfbb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#62 0x00007f79336830af in QEventLoop::processEvents (this=this@entry=0x38f77c0, flags=...) at kernel/qeventloop.cpp:149
#63 0x00007f79336833a5 in QEventLoop::exec (this=this@entry=0x38f77c0, flags=...) at kernel/qeventloop.cpp:204
#64 0x00007f7932aa809d in QDragManager::drag (this=0x394aff0, o=o@entry=0x40ebc20) at kernel/qdnd_x11.cpp:2032
#65 0x00007f7932a2ee3a in QDrag::exec (this=this@entry=0x40ebc20, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#66 0x00007f7882db9c68 in DeclarativeDragArea::mouseMoveEvent (this=0x35c8670, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#67 0x00007f7882db9d21 in DeclarativeDragArea::sceneEventFilter (this=0x35c8670, item=0x3314f00, event=0x7fff8d7caba0) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#68 0x00007f7932fe9a85 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0xceeac0, item=item@entry=0x3314f00, event=event@entry=0x7fff8d7caba0) at graphicsview/qgraphicsscene.cpp:1159
#69 0x00007f7932fee0ae in QGraphicsScenePrivate::sendEvent (this=0xceeac0, item=0x3314f00, event=0x7fff8d7caba0) at graphicsview/qgraphicsscene.cpp:1211
#70 0x00007f7932fee5af in QGraphicsScenePrivate::sendMouseEvent (this=0xceeac0, mouseEvent=0x7fff8d7caba0) at graphicsview/qgraphicsscene.cpp:1295
#71 0x00007f7932ff7176 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff8d7caba0) at graphicsview/qgraphicsscene.cpp:4102
#72 0x00007f793300305c in QGraphicsScene::event (this=0xcfd010, event=0x7fff8d7caba0) at graphicsview/qgraphicsscene.cpp:3451
#73 0x00007f7932a1de2c in QApplicationPrivate::notify_helper (this=this@entry=0xac8890, receiver=receiver@entry=0xcfd010, e=e@entry=0x7fff8d7caba0) at kernel/qapplication.cpp:4567
#74 0x00007f7932a244a0 in QApplication::notify (this=this@entry=0xabcd30, receiver=receiver@entry=0xcfd010, e=e@entry=0x7fff8d7caba0) at kernel/qapplication.cpp:4353
#75 0x00007f7934349d1a in KApplication::notify (this=0xabcd30, receiver=0xcfd010, event=0x7fff8d7caba0) at ../../kdeui/kernel/kapplication.cpp:311
#76 0x00007f79336844dd in QCoreApplication::notifyInternal (this=0xabcd30, receiver=0xcfd010, event=event@entry=0x7fff8d7caba0) at kernel/qcoreapplication.cpp:953
#77 0x00007f7932a1c556 in sendSpontaneousEvent (event=event@entry=0x7fff8d7caba0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#78 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff8d7caba0) at kernel/qapplication.cpp:5565
#79 0x00007f793301825c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x3b720f0, event=event@entry=0x7fff8d7cb1f0) at graphicsview/qgraphicsview.cpp:646
#80 0x00007f793301916a in QGraphicsView::mouseMoveEvent (this=0x3b386b0, event=0x7fff8d7cb1f0) at graphicsview/qgraphicsview.cpp:3276
#81 0x00007f7932a6d635 in QWidget::event (this=this@entry=0x3b386b0, event=event@entry=0x7fff8d7cb1f0) at kernel/qwidget.cpp:8361
#82 0x00007f7932e0efce in QFrame::event (this=0x3b386b0, e=0x7fff8d7cb1f0) at widgets/qframe.cpp:557
#83 0x00007f793301a7b9 in QGraphicsView::viewportEvent (this=0x3b386b0, event=0x7fff8d7cb1f0) at graphicsview/qgraphicsview.cpp:2866
#84 0x00007f7933684646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0xac8890, receiver=receiver@entry=0x383e9c0, event=event@entry=0x7fff8d7cb1f0) at kernel/qcoreapplication.cpp:1063
#85 0x00007f7932a1de0c in QApplicationPrivate::notify_helper (this=this@entry=0xac8890, receiver=receiver@entry=0x383e9c0, e=e@entry=0x7fff8d7cb1f0) at kernel/qapplication.cpp:4563
#86 0x00007f7932a245dd in QApplication::notify (this=this@entry=0xabcd30, receiver=receiver@entry=0x383e9c0, e=e@entry=0x7fff8d7cb1f0) at kernel/qapplication.cpp:4110
#87 0x00007f7934349d1a in KApplication::notify (this=0xabcd30, receiver=0x383e9c0, event=0x7fff8d7cb1f0) at ../../kdeui/kernel/kapplication.cpp:311
#88 0x00007f79336844dd in QCoreApplication::notifyInternal (this=0xabcd30, receiver=receiver@entry=0x383e9c0, event=event@entry=0x7fff8d7cb1f0) at kernel/qcoreapplication.cpp:953
#89 0x00007f7932a23d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#90 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x383e9c0, event=event@entry=0x7fff8d7cb1f0, alienWidget=alienWidget@entry=0x383e9c0, nativeWidget=nativeWidget@entry=0x364a950, buttonDown=buttonDown@entry=0x7f7933503318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#91 0x00007f7932a989cb in QETWidget::translateMouseEvent (this=this@entry=0x364a950, event=event@entry=0x7fff8d7cb570) at kernel/qapplication_x11.cpp:4634
#92 0x00007f7932a98269 in QApplication::x11ProcessEvent (this=0xabcd30, event=event@entry=0x7fff8d7cb570) at kernel/qapplication_x11.cpp:3627
#93 0x00007f7932abfb02 in x11EventSourceDispatch (s=0xac9eb0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#94 0x00007f792a035e04 in g_main_dispatch (context=0xac8d20) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3064
#95 g_main_context_dispatch (context=context@entry=0xac8d20) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3663
#96 0x00007f792a036048 in g_main_context_iterate (context=context@entry=0xac8d20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3734
#97 0x00007f792a0360ec in g_main_context_iteration (context=0xac8d20, may_block=1) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3795
#98 0x00007f79336b17a1 in QEventDispatcherGlib::processEvents (this=0xa38af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#99 0x00007f7932abfbb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#100 0x00007f79336830af in QEventLoop::processEvents (this=this@entry=0x7fff8d7cb940, flags=...) at kernel/qeventloop.cpp:149
#101 0x00007f79336833a5 in QEventLoop::exec (this=this@entry=0x7fff8d7cb940, flags=...) at kernel/qeventloop.cpp:204
#102 0x00007f7933688b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#103 0x00007f7932a1c37c in QApplication::exec () at kernel/qapplication.cpp:3828
#104 0x00007f7936df067c in kdemain (argc=1, argv=0x7fff8d7cbb98) at ../../../../plasma/desktop/shell/main.cpp:126
#105 0x00007f7936a0fec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7fff8d7cbb98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8d7cbb88) at libc-start.c:287
#106 0x000000000040070e in _start ()

Possible duplicates by query: bug 335022, bug 334944, bug 334835, bug 334666, bug 334555.

Reported using DrKonqi